| A | B |
| Irrigation | Process of supplying water to areas of land to make them suitable for growing crops. |
| Photosynthesis | The process by which plans use water, plus carbon dioxide and energy from the sun to make food |
| Water Vapor | The invisible gaseous form of water |
| Ground Water | water that fills that cracks and pores in underground soil and rock layers. |
| Polar Molecule | a molecule that has electrically charged areas |
| Surface Tension | The tightness across the surface of water that is caused by the polar molecules pulling on each other |
| Capillary Action | The combined force of attraction among water molecules and with the molecules of surrounding materials |
| Solution | A mixture that forms when one substance dissolves another. |
| Solvent | A substance that dissolves another substance, forming a solution. |
| State | A form of matter; solid, liquid, or gas |
| Condensation | The process by which a gas changes to a liquid |
| Evaporation | The process by which molecules at the surface of a liquid absorb enough energy to change to the gaseous state. |
| Specific Heat | The amount of heat needed to increase the temperature of a certain mass of substance by 1 degree Celcius. |
| Water Cycle | The continuous process by which water moves through the living and non-living parts of the environment. |
| Transpiration | The process by which plants release water vapor though their leaves. |
| Precipitation | Water that falls to the earth as snow, rain, sleet, or, hail. |